Civil Service Exam Reviewer 2026 - MIXTURE PROBLEM
Автор: GTR Math Tutorial
Загружено: 2026-02-24
Просмотров: 893
Описание:
1. A mix of nuts contains 30% cashews and 70% peanuts. If the mix weighs 5 kg, how many kilograms of cashews are present?
A. 1.5 kg
B. 2 Kg
C. 0.3 kg
D. 3.5 kg
2. How many liters of water must be added to 50 liters of a 40% alcohol solution to reduce the concentration to 20%?
A. 25 liters
B. 10 liters
C. 200 liters
D. 50 liters
8. How many liters of a 5% acid solution must be mixed with 20 liters of a 20% acid solution to obtain a 15% acid solution?
A. 10 liters
B. 20liters
C. 15 liters
D. 5 liters
9. A merchant has coffee worth $60 per kg and coffee worth $90 per kg. How many kg of each must be mixed to get 30 kg of a mixture worth $80 per kg?
A. 15 kg of each
B. 5 kg of $60 and 25 kg of $90
C. 10 kg of $60 and 20 kg of $90
D. 20 kg of $60 and 10 kg of $90
10. A jeweler melts 40 grams of 18-karat gold (75% pure) with 60 grams of 14-karat gold (approx. 58.3% pure). What is the purity of the new alloy?
A. 66.7%
B. 65%
C. 70%
D. 60%
Civil Service Exam Reviewer Playlist:
• Word Problem Set
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